I just might be so inclined.
It isn't just Locke, either. Yesterday I visited the merchant who has set up a table outside the inn, and tested my theory by trying to sell one of the three body parts I then had in my possession. They were still there when I opened the sales window, but the instant I clicked to sell one of them, they all disappeared from the list (without any money changing hands, I might add).
It's a strange thing that no one else seems to have had this problem. But then, I guess this is but one more example of the great mystery of computer ineffability.
As long as this disappearing act stays limited to just body parts (*frantic knocking on wood here*), I'll manage it with frequent visits to my necromancer, just as you suggested.
-----
And no, I haven't started another character after installing the patch. Aren't the updates supposed to apply to existing characters, as well as those created afterward?